FYI: GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. GraphQL isn't tied to any specific database or storage engine and is instead backed by your existing code and data.

Now lets say that we have this end point https://grapql.api.MyWebsite.com

Ok now that we can create a blank UWP app, add 2 folders one for the models and one for the GraqhQL txt file. In my solution the folders are called Model and QlFiles. In QlFiles we will add a txt file called MyQuery.txt that will hold our query.

Next we will need to read this json text file using :

await StorageFile.GetFileFromApplicationUriAsync(appUri);
and

await FileIO.ReadTextAsync(anjFile);

And now we just need to format our get query and we can do the HTTP call.